Application of tellurium in free-cutting steels

Abstract

Te is widely used in iron and steel industry. After adding a certain amount of Te in the steel, many physical and chemical properties can be improved. As a free-cutting element, a small amount of Te can significantly improve the machinability of steel. The existing form of Te in the steel, the modification law of MnS inclusion by Te and the influence rule and mechanism of Te on the machinability of steel are summarized and expounded in detail, providing a reference for further study and development of Te-containing free-cutting steels.

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Acknowledgements

This work was financially supported by the National Key Research and Development Program of China (No. 2018YFB0704400), the National Natural Science Foundation of China (Nos. 51474142 and 51671124) and the China Postdoctoral Science Foundation (No. 2018M632082).